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Polyethylene Isoterephthalate
AKA “PEIT, PET Polymer”
Ingredient
Ingredient Facts
Polyethylene isoterephthalate
AKA: PEIT, PET Polymer
Ingredient · Bulking · EWG: 4
Synthetic
Not Clean
Poly(oxyethyleneoxy-1,4-phthaloyl, oxyethyleneoxy-1,3-phthaloyl)
CAS #
-
Form
Powder
See origin →
Functions
Bulking
Moisturizing
Strengthens Barrier
Adds volume
Traditional Use
A polyester plastic polymer synthesized in the 20th century. Previously used as a microplastic in exfoliating cosmetics before restrictions were implemented on microbeads.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not an Irritant
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR